Shaving machine



March 13, 1945. JENSEN 2,3?LE42 SHAVING MACHINE Filed June 28, 1941 i II K Q' 19 flflTA UR .5, tZEA/SEN,

l NVENTOR Patented Mar. 13, 1945 f UNITED STATES PATENT OFFICE SHAVINGMACHINE Arthur E. Jensen, Anaheim, Calif. Application June 28, 1941,Serial No. 400,171

1 Claim.

My invention relates to a shaving machine and has particular referenceto an improved shaving machine which includes a hair clipping mechanismparticularly adapted to the cutting of relatively long hairs andoperating as an adjunct to the conventional close shaving cutters usedto cut relatively short hairs.

Conventional forms of shaving machines employ a thin stationary bladehaving a plurality of hair receiving apertures therein defining shearingedges across which is moved a reciprocating shearing blade to shear offthe hairs which are extended through the apertures in the stationaryblade. 'While these machines are admirably suited to cutting short hairsclose to the skin surface to provide a close shave, they do not operatesatisfactorily when an attempt is made to cut relatively long hairsbecause the hair receiving apertures are so small that a long hair isbent over and laid fiat instead of being extended through the hairreceiving apertures. If the thin stationary blade is so formed as topermit the ready cutting of long hairs, it is not satisfactory for closeshaving short hairs. The hair receiving apertures are normally made ofsmall size in order to permit the moving blade to be broughtsufficiently close to the skin to provide the desired close shavewithout actually bringing the movable blade into contact therewith. Ifthese apertures are enlarged to facilitate the cutting of long hairs,the skin tends to enter the apertures sufficiently to come into contactwith the moving blade and a burning or abrading of the skin results.

The present invention is directed to improving the conventional shavingmachine constructions to permit the cutting off of relatively longhairs, and it is an object of my invention to provide a shaving machinewhich is particularly adapted for the close-shaving. of short hairs andwhich also includes a clipping mechanism particularly adapted to thecutting of long hairs,

It is also an object of my invention to provide a shaving machine of thecharacter set forth in the preceding paragraph in which a slottedstationary blade or comb carrying a reciprocating shearing blade issecured to the stationary blade of a conventional shaving machine.

It is an additional object of my invention to provide a shaving machineof the character set forth in the preceding paragraphs in which thereciprocating blade is drivably connected to the same power source as isused to operate'the movable blade of the conventional machine.

It is a still further object of my invention to provide a. shavingmachine of the character hereinbefore referred to in which the resilientcharacter of the drivable connection is employed for normally urging theshearing blade into engagement with the comb to provide aself-sharpening action of the blade.

It is also an object of my invention to provide a machine of thecharacter hereinbefore set forth which is so constructed as to permitits being readily taken apart for the purpose of cleaning.

It is an additional object of my invention to provide a shaving machineof the character set forth in the preceding paragraphs wherein thedevice for cutting long hairs is so constructed and arranged as topermit its being incorporated in a conventional shaving machineconstruction with a minimum of change of the construction.

Other objects and advantages of my invention will be apparent from astudy of the following specification, read in connection with the accompanying drawing, wherein:

Fig. 1 is a perspective view of a substantially conventional form ofshaving machine embodying the improvement of my invention;

Fig. 2 is a fragmentary longitudinal section through the hair cuttingportion of the shaving machine; I

Fig. 3 is {in end elevation of the hair cutting mechanism with thestationary blade portion removed therefrom to expose the movable bladeand the operating mechanism therefor; and

Fig. 4 is an exploded perspective view illustrating the appearance andmanner of assembly of the clipping mechanism which is employed forclipping relatively long hairs.

Referring to the drawing, I have illustrated in Fig. 1 a substantiallyconventional shaving machine which includes a body portion I acting as ahandle and as a housing for an electric motor of suitable constructionand employed for the purpose of driving the hair cutting mechanismindicated generally at 2.

The conventional portions of the shaving mechanism 2 are preferablyconstructed along the lines disclosed in my copending application,Serial No. 213,640, filed June 14, 1938, and entitled Shaving machineand include a semicylindrical stationary blade structure 5 of extremethinness and having a large number of hair receiving apertures 6 formedtherein to define shearing edges on the inner surface of the blademember 5 adjacent each of the apertures 6. Coacting with these shearingedges is a movable blade I which is mounted upon a blade carrier 8. Thecarrier 8 is in turn supported for oscillatory movement upon atransversely extending shaft 9 which may be journaled in suitable ears Iand II formed upon an inner supporting structure I2.

The blade carrier 8 includes a downwardly extending driving bracket l3which is apertured as indicated at I4 to receive an upwardly extendingpin l5. The pin [5 is carried by an enlargement or head I6 associatedwith a driven shaft ll which is either drivably engaged with the motorenclosed in the housing I or constitutes the shaft of such motor. Thepin [5 is eccentrically disposed with respect to the axis of rotation ofthe shaft I1 so that as the shaft is rotated, the blade carrier 8 isoscillated from side to side about the axis 9 to cause the movable blade1 to sweep back and forth over the inner surface of the stationary blade5 and shear at the shearing edges such hairs as may be extended throughthe apertures 6.

The stationary blade structure 5 may be removably attached to the casingl as by mounting on the casing a pair of lever members l9 and I9 hingedas at 20 and 2| and carrying inwardly turned ends 22 and 23 adapted tobe extended into suitable notches or apertures formed in the edges ofthe stationary blade 5. The members I8 and I9 are normally urged-into aposition engaging the stationary blade 5 as by means of springs 24.

The mechanism above described comprises a shaving machine constructedalong the lines defined in my copending application above mentioned.This particular form of construction has been illustrated and describedfor convenience, it being understood that the improvement of myinvention to be described hereinafter may also be incorporated inconventional shaving machine constructions of other types.

The improvement to which reference has been had hereinbefore comprises aclipping mechanism indicated generally at 25 adapted particularly to thecutting of relatively long hairs and operating in conjunction with theconventional close shaving mechanism heretofore described. The clippingmechanism 25 includes a stationary shearing blade or comb 26 which isslotted along its upper edge in a direction transverse to the length ofthe member to provide a plurality of hair receiving slots 21 disposedbetween a plurality of comb-like teeth 28. The rear face of the member26 is grooved or channeled to provide a longitudinally extending recess29 of rectangular cross section adapted to closely receive and guide amovable shearing blade 30. The blade 30 is also provided with aplurality of slots 3| dividing the edge of the blade 30 into a pluralityof teeth 32, each of which in turn defines shearing edges 33 and 34adapted to coact with similar shearing edges formed by the penetrationof the slots 21 into the guiding channel 29.

The blade 30 may be retained within the chan nel 29 by means of a leafspring 35 which is preferably secured to the stationary blade structure5 as by means of rivets 36 in a position to resiliently urge the blade30 into the recess 29 when the comb member 26 is secured to thestationary blade 5 in a position such as that illustrated in Fig. 2 asby means of rivets or screws 37. In order to provide a solid seating ofthe comb member 26 with the stationary blade 5 to permit the secureattachment of the comb to the stationaryblade, the lower part of therear surface of the comb 26 is curved as indicated at 38 to conform tothe curvature of the stationary blade 5.

The comb member 26 is preferably provided with a centrally positionedrectangular aperture 39 which may be engaged by the inwardly turned lug23 carried by the attachment member IE! to permit the member IE toengage the member 26 and thereby hold the member 26 and the stationaryblade 5 securely in its proper location upon the casing I.

Reciprocation of the reciprocating blade 30 may be effected by means ofan oscillating arm 40 which has its outermost end turned upwardly asindicated at 4| to engage a notch 42 formed in the lower edge of thereciprocating blade 30. The arm 40 is preferably contoured asillustrated in Fig. 2 to include a downwardly curved portion 43 adaptedto pass under the shaft 9 and that portion of the blade carrier 8 whichsurrounds the shaft 9. The rearward portion of the member 40 is extendedsubstantially horizontally as indicated at 44 and includes a downwardlyturned end 45 which may be received within a suitable slot formed in theupper end of a rock shaft 46 and secured therein as by means of a lockscrew 41. The rock shaft 46 may be journalecl for oscillatory movementin a bearing bracket 48 formed as a part of the supporting structure 12and is preferably squared as indicated at 49 on its lower end orotherwise formed to provide a drivable engagement with a yoke member 50.

The yoke member 50 includes a pair of spaced arms 5i and 52 extending onopposite sides of the head member In contra-distinction to conventionalconstructions, the head member I6 is preferably slightly eccentric withrespect to the axis of rotation of the shaft I! so that as the shaft llrotates, the yoke member 50 is oscillated in a pivotal fashion about therock shaft 46. This oscillation of the rock shaft 46 is in turntransmitted to the member 40 and the resulting oscillation of the member40 produces a reciprocation of the blade 30 within its guiding slot 29to move the shearing edges 33 and 34 past the coacting shearing edgesformed in the comb 26 to thereby cut any hairs which may be extendedthrough the hair receiving slots 21.

It is desired to provide a self-sharpening action for the coactingblades 26 and 3D and for this purpose the oscillating arm 40 is made ofspring material having such shape as to normally extend upwardly to apoint higher than the bottom of the notch 42. Thus when the bladestructure is assembled in the manner illustrated in Fig. 2. the arm 40will be depressed in opposition to its inherent resilience to provide aconstant urging of the blade 30 upwardly into engagement with the undersurface of the teeth 21. Similarly, the spring 35 continuously urges theblade 30 inwardly into the recess 29 with the result that such wear asmay take place along the contacting surface of the blade 30 and the comb26 is continuously taken up and such wear acts to maintain the hairshearing edge continually sharpened.

Attention is directed at this point t the small number and minorcharacter of the changes which must be made to the conventional shavingconstructions in order to incorporate therein the long hair clippingimprovement of my invention. The members 26 and 35 are each secured to asubstantially standard stationary blade structure 5 as by means ofscrews or rviets and the movable be attached to the supby soldering,welding or l6 and closely embracing the same.

The

other suitable means and in so doing the entire assembly of yoke 50,rock-shaft 46 and oscillating arm 4|] may be incorporated in theconventional construction. The only other change which need be made isthe substitution of an eccentric head member l6 for the conventionalconcentric member now employed.

Attention is also directed to the positioning of the long hair clippingstructure 25 at one side of the stationary blade and extendingsubstantially parallel to the axis of the blade supporting shaft 9. Byso positioning the clipping structure 25, a minimum of interference withthe useful area of the stationary blade 5 is achieved while at the sametime disposing the comb 26 in a. position to permit its being used forthe clipping of long hairs without requiring any particular manipulationof the device. 7

It will be observed that by merely presenting the comb 26 to the skinsurface that long hairs may be readily clipped, whereas, a mere reversalof the machine to present the upper and righthand portions of thestationary blade 5 as viewed in Fig. 2 to the skin will permit the closeshaving of relatively short hairs.

To facilitate the ready understanding of the appended claims I have usedthe terms stationary blade and, movable blade to refer to the coactingmembers of the conventional close-shaving mechanism while the terms combmember" and movable shearing member have been used to refer to thecoacting members of the long hair clipping device.

in a straight edge to define a plurality of stationary shearing edges; amovable shearing member carried by said comb and mounted forreciprocating movement past said shearing edges, said movable shearingmember being slotted to define a plurality of shearing edges positionedto coact with the shearing edges of said comb; means for securing saidcomb to saidshaving mechanism in a position to be simultaneously placedagainst the skin to be shaved; and means for coupling said movableshearing member to said driving .means comprising an oscillatable memberengaging said eccentric member, a rock-shaft coupled to saidoscillatable member, and a driving arm extended between said rock-shaftand said movable shearing member for reciprocating said membersimultaneously with actuation of said shaving mechanism.

ARTHUR E. JENSEN.

